import serial.tools.list_ports
import time

ns_val = time.time_ns()

serPort = ""
int1 = 0
str1 = ""
str2 = ""

ports = list(serial.tools.list_ports.comports())
for p in ports:
    print(p)  # This causes each port's information to be printed out.
    # To search this p data, use p[1].

    while int1 < 20:  # Loop checks "COM0" to "COM8" for Msp Port Info.

        if "UART1" in p[1]:  # Looks for "UART1" in P[1].
            str2 = str(int1)  # Converts an Integer to a String, allowing:
            str1 = "COM" + str2  # add the strings together.

        if "UART1" in p[1] and str1 in p[1]:  # Looks for "Msp" and "COM#"
            print("Found MSP430 on %s" % (str1))
            int1 = 20  # Causes loop to end.

        if int1 == 19:
            print("MSP not found!")

        int1 = int1 + 1
    int1 = 0

# Set Port
ser = serial.Serial(str1, 9600, bytesize=serial.EIGHTBITS)  # Put in your speed and timeout value.
ser.close()

ns_ports = time.time_ns()

# get UID from UART
data1 = ""
ser.close()
ser.open()
ser.write('0'.encode())
buffer = ser.readline()
UID = ser.readline().decode('UTF-8')
UID = UID.replace("\n", "")  # replace \n so we don't have a paragraph
print("NFC UID: ",UID)
ser.close()

ns_uid = time.time_ns()

time_needed_for_port_init = (((ns_ports - ns_val)/1000000)/1000)
time_needed_for_read_uid = (((ns_uid - ns_ports)/1000000)/1000)

print("Time port init: ",time_needed_for_port_init)
print("Time read uid: ",time_needed_for_read_uid)